60% (1956)

62% (1993)

50% (2001)

57% (1971)

64% (2013)

53% (1958)

53% (1963)

50% (1983)

66% (2022)

77% (1978)

65% (1992)

69% (2006)

50% (1976)

80% (1985)

68% (1966)

70% (1993)

60% (1957)

40% (1967)

50% (1963)

50% (1958)